src/third_party/mozjs-45/js/src/jit-test/tests/debug/Script-getOffsetsCoverage-02.js

// |jit-test| --ion-pgo=off;

// This script check that when we enable / disable the code coverage collection,
// then we have different results for the getOffsetsCoverage methods.

var g = newGlobal();
var dbg = Debugger(g);
var coverageInfo = [];
var num = 20;
function loop(i) {
  var n = 0;
  for (n = 0; n < i; n++)
    debugger;
}
g.eval(loop.toSource());

dbg.onDebuggerStatement = function (f) {
  // Collect coverage info each time we hit a debugger statement.
  coverageInfo.push(f.callee.script.getOffsetsCoverage());
};

coverageInfo = [];
dbg.collectCoverageInfo = false;
g.eval("loop(" + num + ");");
assertEq(coverageInfo.length, num);
assertEq(coverageInfo[0], null);
assertEq(coverageInfo[num - 1], null);

coverageInfo = [];
dbg.collectCoverageInfo = true;
g.eval("loop(" + num + ");");
assertEq(coverageInfo.length, num);
assertEq(!coverageInfo[0], false);
assertEq(!coverageInfo[num - 1], false);

coverageInfo = [];
dbg.collectCoverageInfo = false;
g.eval("loop(" + num + ");");
assertEq(coverageInfo.length, num);
assertEq(coverageInfo[0], null);
assertEq(coverageInfo[num - 1], null);